1 files changed, 78 insertions, 0 deletions
diff --git a/cpukit/libfs/src/imfs/imfs_link.c b/cpukit/libfs/src/imfs/imfs_link.c
new file mode 100644
index 0000000000..4c2136ba71
--- /dev/null
+++ b/cpukit/libfs/src/imfs/imfs_link.c
@@ -0,0 +1,78 @@
+/*
+ *  IMFS_link
+ *
+ *  The following rouine creates a new link node under parent with the
+ *  name given in name.  The link node is set to point to the node at
+ *  to_loc.
+ *
+ *  COPYRIGHT (c) 1989-2010.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include "imfs.h"
+#include <rtems/libio_.h>
+#include <rtems/seterr.h>
+
+int IMFS_link(
+  rtems_filesystem_location_info_t  *to_loc,      /* IN */
+  rtems_filesystem_location_info_t  *parent_loc,  /* IN */
+  const char                        *token        /* IN */
+)
+{
+  IMFS_types_union   info;
+  IMFS_jnode_t      *new_node;
+  char               new_name[ IMFS_NAME_MAX + 1 ];
+  int                i;
+
+  /*
+   *  Verify this node can be linked to.
+   */
+  info.hard_link.link_node = to_loc->node_access;
+  if ( info.hard_link.link_node->st_nlink >= LINK_MAX )
+    rtems_set_errno_and_return_minus_one( EMLINK );
+
+  /*
+   * Remove any separators at the end of the string.
+   */
+  IMFS_get_token( token, strlen( token ), new_name, &i );
+
+  /*
+   *  Create a new link node.
+   *
+   *  NOTE: Coverity Id 19 reports this as a leak
+   *        While technically not a leak, it indicated that IMFS_create_node
+   *        was ONLY passed a NULL when we created the root node.  We
+   *        added a new IMFS_create_root_node() so this path no longer
+   *        existed.  The result was simpler code which should not have
+   *        this path. 
+   */
+  new_node = IMFS_create_node(
+    parent_loc,
+    IMFS_HARD_LINK,
+    new_name,
+    ( S_IFLNK | ( S_IRWXU | S_IRWXG | S_IRWXO )),
+    &info
+  );
+
+  if ( !new_node )
+    rtems_set_errno_and_return_minus_one( ENOMEM );
+
+  /*
+   * Increment the link count of the node being pointed to.
+   */
+  info.hard_link.link_node->st_nlink++;
+  IMFS_update_ctime( info.hard_link.link_node );
+
+  return 0;
+}